Research Publications (Food Safety)

In this study, the antimicrobial activity of silver nanoparticles (AgNPs L21, AgNPs L22) produced using aqueous extracts of the Laser trilobum harvested in 2021 and 2022 was optimized. The experimental design and optimization of antimicrobial activity were performed using the response surface method (RSM).

The green synthesis of silver nanoparticles offers a non-toxic, eco-friendly, economical, and efficient solution against various microorganisms. The study aimed to investigate the utilization of cocoa bean shells for the production of silver nanoparticles through green synthesis, besides its characterization and evaluation against foodborne pathogens.

The high Salmonella and Listeria monocytogenes risk in poultry products reinforces the urgent need for new technologies with high antimicrobial effects. In that sense, a combined technology consisting of encapsulated extra virgin olive oil (EVOO) during chicken nugget breading combined with infrared processing was hereby studied at three levels (experiments). The high in vitro EVOO antimicrobial activity (up to 74%), which was 1.2-fold higher against L.

Antimicrobial treatment procedures are often applied during produce post-harvest processing and storage as a complementary measure to reduce the potential risk of foodborne illness. Herein, we investigate the feasibility and efficacy of utilizing essential oil vapor–assisted plasma treatments to sanitize lettuce, spinach, and tomatoes. These fresh produce items are often associated with foodborne illnesses. Additionally, potatoes were chosen to introduce topography diversity into the study.

An ammonia-sensitive, easy-to-use, pH-responsive food packaging indicator was developed using drop-coated filter paper combined with hydrothermally generated glucose-derived carbon dots (G-CQDs). The stability and efficacy of the prepared G-CQD were confirmed by TEM, zeta potential, and optical and luminescent investigations. The multifunctional G-CQD exhibited potent antibacterial activity against S. enterica, E. coli, L. monocytogenes, and S.

Hydrothermally prepared garlic (Allium sativum) cloves-derived carbon dots (CDs) were used to fabricate carrageenan/sodium alginate (Car/Alg)-based functional films for UV-barrier food packaging. The effects of different concentrations of CDs on the films’ structural, functional, physical, and mechanical properties were analyzed. The CDs acted as a reinforcing agent to improve the films’ mechanical stability and surface hydrophobicity.

The current research was designed to compare the physicochemical and antimicrobial properties of cell-free supernatant (CFS) and whole-cell postbiotic (WCP) and reveal the efficacy of WCP in combination with chitosan and thymol for extending the shelf life and inhibiting emerging foodborne pathogens in chicken breast fillets during storage at 4 °C.

This research aimed to develop a new bi-layer edible coating using sodium alginate (SA, internal layer) and sage seed gum (SSG, external layer) to extend the shelf-life of fresh cheese. Satureja khuzestanica Jamzad essential oil (SEO) with high carvacrol content (91.33%) was incorporated into SA coating as an active agent. Four fresh cheese groups were prepared, including uncoated and coated samples with SA-SSG, SA-SSG with 0.5% SEO, and SA-SSG with 1% SEO.

The active pectin-polyvinylpyrrolidone nanocomposite film incorporated with titania nanoparticles and bael shell extract was fabricated via the casting solution method. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR) was utilized to analyze the nanocomposite films. The titanium nanoparticles were found to be uniformly dispersed throughout the matrix of the pectin-polyvinylpyrrolidone polymer, as shown by the SEM analysis.

To meet the demands for more effective and ecofriendly food packaging strategies, the potential of nisin-loaded rhamnolipid functionalized nanofillers (rhamnosomes) has been explored after embedding in hydroxypropyl-methylcellulose (HPMC) and κ-carrageenan (κ-CR)-based packaging films. It was observed that intrinsically active rhamnosomes based nanofillers greatly improved the mechanical and optical properties of nano-active packaging (NAP) films.

Introduction The objectives of this study were to evaluate the synergistic antimicrobial effect of ultraviolet A (UVA) and malic acid (MA) combination treatment against Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes on spinach and to elucidate the mechanisms underlying the synergistic antimicrobial effects. Methods The cocktail of three pathogens was inoculated on the spinach leaves.

The aim of this research was to investigate the potential of tomato seed mucilage (TSM) as a new source for preparation of biodegradable films.

The aim of this research was to investigate the potential of tomato seed mucilage (TSM) as a new source for preparation of biodegradable films.

The aim of this study was to investigate the growth-inhibitory effects of X-ray irradiation against gram-negative (Escherichia coli O157:H7 and Salmonella Typhimurium) and gram-positive pathogenic bacteria (Listeria monocytogenes and Staphylococcus aureus) in apple, orange, and tomato juices. Additionally, the effects of X-ray irradiation on juice quality attributes were examined. Upon irradiation with 0.8 kGy X-ray, the counts of E.

In the present study, we evaluated the antimicrobial activity of passion fruit peel extract (PPE) against Escherichia coli O157:H7 and Listeria monocytogenes. The application of PPE using an electrostatic spraying system for the disinfection of fresh-cut Lollo Rossa and beetroot leaves was also examined and compared with conventional PPE washing.

This study applied hurdle technology to achieve effective microbial inactivation, and concurrently improve the qualities of soft persimmon juice during storage. Hurdle technology applied was based on moderate temperature, ultrasonication, and pH adjustment (using ascorbic acid) as preservative factors.

Active films have gained increasing interest because of their potential to reduce the amount of additives into foods. The aim of this work was to produce and characterize bi-layer films based on gelatin in both layers, in which the nisin and/or “pitanga” leaf hydroethanolic extract was loaded in the second layer.

The aim of this study was to develop a refrigerator performance assessment procedure based on the temperature (2 × 106 values) of ground beef stored in its bottom drawer set to Fresh Meat (0 °C). Effects analyzed were ambient temperature (LT, 21.1 °C/HT, 32.2 °C), food load (LL, 22.5 kg/HL, 39.0 kg), door openings, and refrigerator compressor mode (SS, single speed/VS, variable speed).

The hydrolysis of bovine cheese whey (BCW) proteins was performed by the Alcalase immobilized on the support glyoxyl-corn-cob-powder (AGCCP). The whey protein hydrolysates (WPH) obtained with AGCPP were fractionated by RP-HPLC according to the hydrophilicity of the peptides (F1, hydrophilic; F2, intermediate hydrophilicity; and F3, hydrophobic). The fractions were analyzed by MALDI-TOF, and molecular weight peptides (< 1500 m/z) were identified.

Cherry tomatoes are one of the most popular tomato varieties known for their bioactive compounds and sensory properties. One way to reduce the contamination of tomato is to coat them with natural or antimicrobial substances.

Sodium hypochlorite has been used in the food industry to reduce microbial contamination in food; however, the use of sodium hypochlorite is insufficient considering the human health hazards and environmental pollution. To overcome this issue, plant-derived antimicrobial agents have been developed.

Liposomes have been broadly studied as delivery systems for bioactive compounds, although its relatively low stability remains a limitation for commercial application.

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